add programmatic skip example

Author: HugoDF

src/01.03-programmatic-skip.test.js

@@ -0,0 +1,20 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+
+test(
+	"skips using config if environment variable is missing",
+	{ skip: !process.env.REQUIRED_ENV_VARIABLE },
+	() => {
+		assert.fail("if we get here, we need REQUIRED_ENV_VARIABLE and fail");
+	},
+);
+
+test("skips programmatically if environment variable is missing", (t) => {
+	if (!process.env.REQUIRED_ENV_VARIABLE) {
+		return t.skip("REQUIRED_ENV_VARIABLE is missing");
+	}
+
+	assert.fail(
+		'If we got here the ".failing" modifier would not be satisfied since the test passed',
+	);
+});